Electric field from 2 charges
(shown in lecture)
A nice applet that shows the electric field from 2 charges with
different charges.
Caltech
Electric Field Applet (shown in lecture)
Electric field applet which automatically draws field lines. Shown in
class.
You can also release the charges and watch them zip around.
Try the "randomize" button and look at the pretty results!
Electric
Fields - Many Charges (not shown in lecture)
Dan Schroeder's applet: Can have a ring of charges and a line of
charges.